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/*
htop - dragonflybsd/Platform.c
(C) 2014 Hisham H. Muhammad
(C) 2017 Diederik de Groot
Released under the GNU GPLv2+, see the COPYING file
in the source distribution for its full text.
*/

#include "dragonflybsd/Platform.h"

#include <math.h>
#include <time.h>
#include <sys/resource.h>
#include <sys/sysctl.h>
#include <sys/time.h>
#include <sys/types.h>
#include <vm/vm_param.h>

#include "ClockMeter.h"
#include "CPUMeter.h"
#include "DateMeter.h"
#include "DateTimeMeter.h"
#include "HostnameMeter.h"
#include "LoadAverageMeter.h"
#include "MemoryMeter.h"
#include "MemorySwapMeter.h"
#include "ProcessList.h"
#include "SwapMeter.h"
#include "SysArchMeter.h"
#include "TasksMeter.h"
#include "UptimeMeter.h"
#include "dragonflybsd/DragonFlyBSDProcess.h"
#include "dragonflybsd/DragonFlyBSDProcessList.h"


const ProcessField Platform_defaultFields[] = { PID, USER, PRIORITY, NICE, M_VIRT, M_RESIDENT, STATE, PERCENT_CPU, PERCENT_MEM, TIME, COMM, 0 };

const SignalItem Platform_signals[] = {
   { .name = " 0 Cancel",    .number =  0 },
   { .name = " 1 SIGHUP",    .number =  1 },
   { .name = " 2 SIGINT",    .number =  2 },
   { .name = " 3 SIGQUIT",   .number =  3 },
   { .name = " 4 SIGILL",    .number =  4 },
   { .name = " 5 SIGTRAP",   .number =  5 },
   { .name = " 6 SIGABRT",   .number =  6 },
   { .name = " 7 SIGEMT",    .number =  7 },
   { .name = " 8 SIGFPE",    .number =  8 },
   { .name = " 9 SIGKILL",   .number =  9 },
   { .name = "10 SIGBUS",    .number = 10 },
   { .name = "11 SIGSEGV",   .number = 11 },
   { .name = "12 SIGSYS",    .number = 12 },
   { .name = "13 SIGPIPE",   .number = 13 },
   { .name = "14 SIGALRM",   .number = 14 },
   { .name = "15 SIGTERM",   .number = 15 },
   { .name = "16 SIGURG",    .number = 16 },
   { .name = "17 SIGSTOP",   .number = 17 },
   { .name = "18 SIGTSTP",   .number = 18 },
   { .name = "19 SIGCONT",   .number = 19 },
   { .name = "20 SIGCHLD",   .number = 20 },
   { .name = "21 SIGTTIN",   .number = 21 },
   { .name = "22 SIGTTOU",   .number = 22 },
   { .name = "23 SIGIO",     .number = 23 },
   { .name = "24 SIGXCPU",   .number = 24 },
   { .name = "25 SIGXFSZ",   .number = 25 },
   { .name = "26 SIGVTALRM", .number = 26 },
   { .name = "27 SIGPROF",   .number = 27 },
   { .name = "28 SIGWINCH",  .number = 28 },
   { .name = "29 SIGINFO",   .number = 29 },
   { .name = "30 SIGUSR1",   .number = 30 },
   { .name = "31 SIGUSR2",   .number = 31 },
   { .name = "32 SIGTHR",    .number = 32 },
   { .name = "33 SIGLIBRT",  .number = 33 },
};

const unsigned int Platform_numberOfSignals = ARRAYSIZE(Platform_signals);

const MeterClass* const Platform_meterTypes[] = {
   &CPUMeter_class,
   &ClockMeter_class,
   &DateMeter_class,
   &DateTimeMeter_class,
   &LoadAverageMeter_class,
   &LoadMeter_class,
   &MemoryMeter_class,
   &MemorySwapMeter_class,
   &SwapMeter_class,
   &TasksMeter_class,
   &UptimeMeter_class,
   &BatteryMeter_class,
   &HostnameMeter_class,
   &SysArchMeter_class,
   &AllCPUsMeter_class,
   &AllCPUs2Meter_class,
   &AllCPUs4Meter_class,
   &AllCPUs8Meter_class,
   &LeftCPUsMeter_class,
   &RightCPUsMeter_class,
   &LeftCPUs2Meter_class,
   &RightCPUs2Meter_class,
   &LeftCPUs4Meter_class,
   &RightCPUs4Meter_class,
   &LeftCPUs8Meter_class,
   &RightCPUs8Meter_class,
   &BlankMeter_class,
   NULL
};

void Platform_init(void) {
   /* no platform-specific setup needed */
}

void Platform_done(void) {
   /* no platform-specific cleanup needed */
}

void Platform_setBindings(Htop_Action* keys) {
   /* no platform-specific key bindings */
   (void) keys;
}

int Platform_getUptime() {
   struct timeval bootTime, currTime;
   int mib[2] = { CTL_KERN, KERN_BOOTTIME };
   size_t size = sizeof(bootTime);

   int err = sysctl(mib, 2, &bootTime, &size, NULL, 0);
   if (err) {
      return -1;
   }
   gettimeofday(&currTime, NULL);

   return (int) difftime(currTime.tv_sec, bootTime.tv_sec);
}

void Platform_getLoadAverage(double* one, double* five, double* fifteen) {
   struct loadavg loadAverage;
   int mib[2] = { CTL_VM, VM_LOADAVG };
   size_t size = sizeof(loadAverage);

   int err = sysctl(mib, 2, &loadAverage, &size, NULL, 0);
   if (err) {
      *one = 0;
      *five = 0;
      *fifteen = 0;
      return;
   }
   *one     = (double) loadAverage.ldavg[0] / loadAverage.fscale;
   *five    = (double) loadAverage.ldavg[1] / loadAverage.fscale;
   *fifteen = (double) loadAverage.ldavg[2] / loadAverage.fscale;
}

int Platform_getMaxPid() {
   int maxPid;
   size_t size = sizeof(maxPid);
   int err = sysctlbyname("kern.pid_max", &maxPid, &size, NULL, 0);
   if (err) {
      return 999999;
   }
   return maxPid;
}

double Platform_setCPUValues(Meter* this, unsigned int cpu) {
   const DragonFlyBSDProcessList* fpl = (const DragonFlyBSDProcessList*) this->pl;
   unsigned int cpus = this->pl->activeCPUs;
   const CPUData* cpuData;

   if (cpus == 1) {
      // single CPU box has everything in fpl->cpus[0]
      cpuData = &(fpl->cpus[0]);
   } else {
      cpuData = &(fpl->cpus[cpu]);
   }

   double  percent;
   double* v = this->values;

   v[CPU_METER_NICE]   = cpuData->nicePercent;
   v[CPU_METER_NORMAL] = cpuData->userPercent;
   if (this->pl->settings->detailedCPUTime) {
      v[CPU_METER_KERNEL]  = cpuData->systemPercent;
      v[CPU_METER_IRQ]     = cpuData->irqPercent;
      this->curItems = 4;
      percent = v[0] + v[1] + v[2] + v[3];
   } else {
      v[2] = cpuData->systemAllPercent;
      this->curItems = 3;
      percent = v[0] + v[1] + v[2];
   }

   percent = isnan(percent) ? 0.0 : CLAMP(percent, 0.0, 100.0);

   v[CPU_METER_FREQUENCY] = NAN;
   v[CPU_METER_TEMPERATURE] = NAN;

   return percent;
}

void Platform_setMemoryValues(Meter* this) {
   // TODO
   const ProcessList* pl = this->pl;

   this->total = pl->totalMem;
   this->values[0] = pl->usedMem;
   this->values[1] = pl->buffersMem;
   // this->values[2] = "shared memory, like tmpfs and shm"
   this->values[3] = pl->cachedMem;
   // this->values[4] = "available memory"
}

void Platform_setSwapValues(Meter* this) {
   const ProcessList* pl = this->pl;
   this->total = pl->totalSwap;
   this->values[0] = pl->usedSwap;
   this->values[1] = NAN;
}

char* Platform_getProcessEnv(pid_t pid) {
   // TODO
   (void)pid;  // prevent unused warning
   return NULL;
}

char* Platform_getInodeFilename(pid_t pid, ino_t inode) {
   (void)pid;
   (void)inode;
   return NULL;
}

FileLocks_ProcessData* Platform_getProcessLocks(pid_t pid) {
   (void)pid;
   return NULL;
}

bool Platform_getDiskIO(DiskIOData* data) {
   // TODO
   (void)data;
   return false;
}

bool Platform_getNetworkIO(NetworkIOData* data) {
   // TODO
   (void)data;
   return false;
}

void Platform_getBattery(double* percent, ACPresence* isOnAC) {
   int life;
   size_t life_len = sizeof(life);
   if (sysctlbyname("hw.acpi.battery.life", &life, &life_len, NULL, 0) == -1)
      *percent = NAN;
   else
      *percent = life;

   int acline;
   size_t acline_len = sizeof(acline);
   if (sysctlbyname("hw.acpi.acline", &acline, &acline_len, NULL, 0) == -1)
      *isOnAC = AC_ERROR;
   else
      *isOnAC = acline == 0 ? AC_ABSENT : AC_PRESENT;
}

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